Whiskey stone



FIG. 1 is a perspective view of a whiskey stone, showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a side elevation view thereof; and,

FIG. 6 is a perspective view thereof, showing whiskey stone in a use condition.

The broken lines shown in the drawings represent unclaimed environment only and form no part of the claimed design. 

CLAIM The ornamental design for a whiskey stone, as shown and described. 